The “reduced” collisions framework is an implementation of the ImpactCollider framework in the Visual Setup. Processes in this framework are limited to kinetic particles interacting via elastic, excitation, ionization, and a set of charge exchange and momentum exchange collisions with a background gas species.
The “reduced” collisions are available when particles in the Basic Settings element
is set to include particles and the collision framework is set to reduced. This will add a “ReducedCollisions”
element to appear with in the “Particle Dynamics” element.
To include a collision process, right-click on the Electron Neutral Fluid Collision in the element tree and choose Add CollisionProcess to choose one of either Elastic, Excitation, or Ionization.
- neutral gas
- Select the neutral gas to use in the collision. The drop down will automatically populate with available pre-defined BackgroundGases elements.
- impact particles
- Select the electron particles to use in the collision. The drop down will automatically populate with available pre-defined KineticParticles of kind = Electrons.
The cross section for the collision must be specified. You can choose whether to use built in cross sections, cross sections from the Evaluated Electron Data Library (EEDL) or by specifying your own user defined cross sections in a text file.
User provided cross-section data provided in a text file. For more information on the format of the file, please see OAFunc Cross-Section Interface.
The name of the file containing the cross-section data.
The type of scattering.
The cross section for the collision must be specified. You can choose whether to use built in cross sections, cross sections from the Evaluated Electron Data Library (EEDL) or by specifying your own user defined cross sections in a text file.
User provided cross-section data provided in a text file. For more information on the format of the file, please see OAFunc Cross-Section Interface.
The name of the file containing the cross-section data.
The type of scattering:
The cross section for the collision must be specified. You can choose whether to use built in cross sections, cross sections from the Evaluated Electron Data Library (EEDL) or by specifying your own user defined cross sections in a text file.
User provided cross-section data provided in a text file. For more information on the format of the file, please see OAFunc Cross-Section Interface
The name of the file containing the cross-section data.
The type of scattering:
To include a collision process, right-click on the Ion Neutral Fluid Collision in the element tree and choose Add CollisionProcess to choose one of either Charge Exchange or Momentum Exchange.
- neutral gas
- Select the neutral gas to use in the collision. The drop down will automatically populate with available pre-defined BackgroundGases elements.
- impact particles
- Select the charged particles to use in the collision. The drop down will automatically populate with available pre-defined KineticParticles of kind = Charged Particles.
The cross section for the collision must be specified. You can choose whether to use built in cross sections, cross sections from the Evaluated Electron Data Library (EEDL) or by specifying your own user defined cross sections in a text file.
The built-in collisions utilize existing internal collision cross-section data.
User provided cross-section data provided in a text file. For more information on the format of the file, please see OAFunc Cross-Section Interface.
The name of the file containing the cross-section data.
The type of scattering.
The cross section for the collision must be specified. You can choose whether to use built in cross sections, cross sections from the Evaluated Electron Data Library (EEDL) or by specifying your own user defined cross sections in a text file.
The built-in collisions utilize existing internal collision cross-section data.
User provided cross-section data provided in a text file. For more information on the format of the file, please see OAFunc Cross-Section Interface
The name of the file containing the cross-section data.
The type of scattering.
isotropic